// 
// Copyright (c) 2006-2009 Ben Motmans
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// Author(s):
//    Ben Motmans <ben.motmans@gmail.com>
//

using System;
using System.Collections.Generic;

using Anculus.Core;

namespace Anculus.Core
{
	/// <summary>
	/// 
	/// </summary>
	public class ColoredConsoleLogBackend : ConsoleLogBackend
	{
		protected ConsoleColor fgColor;
		protected ConsoleColor levelColor;
		protected ConsoleColor curColor;

		public ColoredConsoleLogBackend ()
		{
			fgColor = Console.ForegroundColor;
		}
		
		public override void WriteEntry (LogEntry entry)
		{
			if (entry == null)
				return;
			
			ConsoleColor newColor = GetLevelColor (entry.LogLevel);
			if (curColor != newColor) {
				curColor = newColor;
				Console.ForegroundColor = newColor;
			}
			
			base.WriteEntry (entry);
			
			if (curColor != fgColor)
				Console.ForegroundColor = fgColor;
		}
		
		protected ConsoleColor GetLevelColor (LogLevel level)
		{
			switch (level)
			{
				case LogLevel.Trace:
					return ConsoleColor.Gray;
				case LogLevel.Debug:
					return ConsoleColor.Blue;
				case LogLevel.Info:
					return fgColor;
				case LogLevel.Warning:
					return ConsoleColor.Yellow;
				case LogLevel.Error:
					return ConsoleColor.Red;
				case LogLevel.Fatal:
					return ConsoleColor.DarkRed;
				default:
					return fgColor;
			}
		}
	}
}